<script setup>
    import { User, Lock } from '@element-plus/icons-vue'
    import { ref } from 'vue'
    import { ElMessage } from 'element-plus';
    //控制注册与登录表单的显示， 默认显示注册
    const isRegister = ref(false)
    //定义数据模型
    const registerData = ref({
        username: '',
        password: '',
        rePassword: ''
    })

    //校验密码的函数
    const checkRePassword = (rule, value, callback) => {
        if (value == '') {
            callback(new Error('请再次输入密码'))
        } else if (value != registerData.value.password) {
            callback(new Error('请确保两次输入的密码一样'))
        } else {
            callback()
        }
    }
    //定义表单校验规则
    const rules = {
        username: [
            { required: true, message: '请输入用户名', trigger: 'blur' },
            { min: 5, max: 16, message: '长度为5~16位非空字符', trigger: 'blur' },
        ],
        password: [
            { required: true, message: '请输入密码', trigger: 'blur' },
            { min: 5, max: 16, message: '长度为5~16位非空字符', trigger: 'blur' }
        ],
        rePassword: [
            { validator: checkRePassword, trigger: 'blur' }
        ],
    }

    //调用后台接口完成注册
    import { userRegisterService, userLoginService } from '@/api/user.js'
    const register = async () => {
        //registerData是一个响应式对象，如果需要获取值，需要.value
        let result = await userRegisterService(registerData.value)
        // console.log(result);
        // if (result.code === 0) {
        //     alert(result.msg ? result.msg : "注册成功");
        // } else {
        //     alert("注册失败");
        // }
        ElMessage.success(result.msg ? result.msg : "注册成功");
    }

    //绑定数据，复用注册表单的数据模型
    //表单数据校验
    //登录函数
    import {useRouter} from 'vue-router'
    import {useTokenStore} from '@/stores/token.js'

    const router = useRouter()
    const tokenStore = useTokenStore();
    const login = async () => {
        let result = await userLoginService(registerData.value)

        // if (result.code === 0) {
        //     alert(result.msg ? result.msg : '登录成功')
        // } else {
        //     alert('登录失败')
        // }

        ElMessage.success(result.msg ? result.msg : '登录成功')
        //把得到的token存储到pinia中
        tokenStore.setToken(result.data)

        //跳转到首页，路由完成跳转
        router.push('/')
    }

    //定义函数，清空数据模型的数据
    const clearRegisterData = () => {
        registerData.value = {
            username: '',
            password: '',
            rePassword: ''
        }
    }

</script>

<template>
    <el-row class="login-page">
        <el-col :span="12" class="bg"></el-col>
        <el-col :span="6" :offset="3" class="form">
            <!-- 注册表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="registerData" :rules="rules">
                <el-form-item>
                    <h1>注册</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码"
                        v-model="registerData.password"></el-input>
                </el-form-item>
                <el-form-item prop="rePassword">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码"
                        v-model="registerData.rePassword"></el-input>
                </el-form-item>
                <!-- 注册按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="register">
                        注册
                    </el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = false;clearRegisterData()">
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>
            <!-- 登录表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-else :model="registerData" :rules="rules">
                <el-form-item>
                    <h1>登录</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码"
                        v-model="registerData.password"></el-input>
                </el-form-item>
                <el-form-item class="flex">
                    <div class="flex">
                        <el-checkbox>记住我</el-checkbox>
                        <el-link type="primary" :underline="false">忘记密码？</el-link>
                    </div>
                </el-form-item>
                <!-- 登录按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="login">登录</el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = true;clearRegisterData()">
                        注册 →
                    </el-link>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<style lang="scss" scoped>
    /* 样式 */
    .login-page {
        height: 100vh;
        background-color: #fff;

        .bg {
            background: url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
                url('@/assets/login_bg.jpg') no-repeat center / cover;
            border-radius: 0 20px 20px 0;
        }

        .form {
            display: flex;
            flex-direction: column;
            justify-content: center;
            user-select: none;

            .title {
                margin: 0 auto;
            }

            .button {
                width: 100%;
            }

            .flex {
                width: 100%;
                display: flex;
                justify-content: space-between;
            }
        }
    }
</style>